Hi all,
I have installed Yagarto and imported the sam7s blinky project supplied
by Atmel for the 7S-EK board. I have successfully compiled downloaded
and run the code and am able to use all debug functions.
My question is:
The Atmel demo project supplied its own libraries "libc.a, libgcc.a and
libm.a" does anybody know where these libraries come from? Can anybody
tell me how to use Newlib with Yagarto. I dont want to have to compile
it myself. Is the newlib library available already compiled for arm?
Does Yagarto come with Newlib?
Thanks!
Harold

> The Atmel demo project supplied its own libraries "libc.a, libgcc.a and> libm.a" does anybody know where these libraries come from?
I did not notice this. Could you please give the URL from where you have
downloaded the demo?
> Can anybody> tell me how to use Newlib with Yagarto. I dont want to have to compile> it myself. Is the newlib library available already compiled for arm?> Does Yagarto come with Newlib?http://www.yagarto.de/ : ...Newlib-1.16.0...

> I did not notice this. Could you please give the URL from where you have> downloaded the demo?
I downloaded so much stuf that I cant remember where I got it from but
the project is called demo_at91sam7_blink_flash and it is authored by
James P Lynch.
I included the lib files I mentioned.

Thanks Martin,
So how in the makefile do I tell the linker to use Yagarto's newlib? I
have searched the yagarto directory and have found library files under
diferent directories. Which one is newlib? Are they all collectively
newlib?
Martin Thomas wrote:
>> The Atmel demo project supplied its own libraries "libc.a, libgcc.a and>> libm.a" does anybody know where these libraries come from?> I did not notice this. Could you please give the URL from where you have> downloaded the demo?>>> Can anybody>> tell me how to use Newlib with Yagarto. I dont want to have to compile>> it myself. Is the newlib library available already compiled for arm?>> Does Yagarto come with Newlib?> http://www.yagarto.de/ : ...Newlib-1.16.0...

Well, I can not speak for Yagarto, but as far as I know Michael an I use
the same code-base (binutils, gcc, newlib), similar
configuration-options and build-methods.
> So how in the makefile do I tell the linker to use Yagarto's newlib?
Pass -lc and -lm as options for linking. libc.a and libm.a are both
based on the newlib-sources, so you use "Yagarto's newlib". Make sure to
call the linker through the front-end (arm-elf-gcc), do not use direct
calls to the linker (arm-elf-ld). This will avoid problems.
> I have searched the yagarto directory and have found library files under> diferent directories.
Yes, it's because the toolchain supports different targets (i.e. ARM,
thumb, little-endian, big-endian). There are special "builds" of libm.a
and libc.a for every target (read about multilibs in the binutils and
gcc documentation).
> Which one is newlib?
All of them are based on the newlib-sources.
> Are they all collectively newlib?
Just different libraries based on the same code. Look into the map-file
and disassembly, the full path to the used libc.a and libm.a should be
shown for every runtime-library function.